Mobile high pressure system

...When a cold front stretching southwest from a low pressure system passes, gusts of wind and thunder may occur, and after the front passes, the northwest wind will be strong, the temperature will drop, and the cold weather will return. (5) Mobile high pressure system In spring and autumn, the weather changes periodically, and it is likely to rain every 3 to 4 days. This is because mobile high pressure systems and low pressure systems alternately move eastward around Japan at about 50 km/h, and mobile high pressure systems are also the atmospheric pressure arrangement that represents spring and autumn.

*Some of the terminology that refers to "mobile high-pressure type" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…低気圧から南西にのびる寒冷前線の通過の際は，突風や雷などが起こり，また通過後は北西の風が強く気温が下降して寒のもどりとなることがある。(5)移動性高気圧型　春，秋は天気が周期的に変わり，3～4日ごとに雨が降りやすい。これは，移動性の高気圧や低気圧が交互に日本付近を50km/hぐらいで東進するからで，移動性高気圧型は春，秋を代表する気圧配置でもある。…

※「移動性高気圧型」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報